TMA-DPH是一种疏水性荧光膜探针 (Ex=355 nm; Em=430 nm)。TMA-DPH 能够锚定在细胞表面，定位磷脂双分子层的不同区域。通过分析 TMA-DPH 在质膜及膜的亚结构中的荧光极化数值，可以测定细胞膜的流动性。 TMA-DPH is a hydrophobic fluorescent membrane probe (Ex=355 nm; Em=430 nm). TMA-DPH is able to anchor on the cell surface and localize to different regions of the phospholipid bilayer. By analyzing the fluorescence polarization values of TMA-DPH in the plasma membrane and membrane substructures, the fluidity of the cell membrane can be determined.